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Arun Kumar Choudhury
Arun Kumar Choudhury (6 January 1923 – 6 September 1987) was the Indian founding head of the Department of Computer Science and Engineering at the University of Calcutta. He was a pioneer in both Analog and Digital Computing, since 1950's. A.K. Choudhury Memorial Lectures are arranged at various Indian Universities to celebrate his contributions. Career Choudhury was instrumental in building the first analog computer in India. He is best known for his work on optimization of Switching Circuits, High Threshold Logic High-threshold logic (HTL), also known as ''low-speed logic'' (''LSL'') or ''high-level logic'' (''HLL''), is a variant of diode–transistor logic used in environments where noise is very high. Operation The threshold values at the input to a ..., unate-cascade realizability and fault-tolerant synthesis of sequential machine A list of Choudhury's publications may be found here and here. Each year, lectures on Computer Science are arranged in memory of C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Purnia, Bihar
Purnia ()(also romanized as Purnea) is a city that serves as the administrative headquarters of both Purnia district and Purnia division in the Indian state of Bihar. Total geographical area of Purnia Urban Agglomeration is which is next only to Patna. Population density of the city is 3058 persons per km sq. making it the 4th largest city of Bihar by population. It is nearly 302 kilometres from Patna, as well as 171 km from Siliguri, 90 km from Bhagalpur.It is 640 km from Guwahati (Approx.) and 450 km from Kolkata, the capital of the adjacent state of West Bengal and the largest city in East India. Purnia district covers 3202.31 sq. km of the state of Bihar. The Indian Army, Indian Air Force, and three of five branches of India's Central Armed Police Forces – the Border Security Force (BSF), the Sashastra Seema Bal (SSB), and the Indo-Tibetan Border Police (ITBP) – have bases around the district. Etymology Several possible origins for the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of Calcutta
The University of Calcutta (informally known as Calcutta University; CU) is a public collegiate state university in India, located in Kolkata, West Bengal, India. Considered one of best state research university all over India every year, CU has topped among India's best universities several times. It has 151 affiliated undergraduate colleges and 16 institutes in Kolkata and nearby areas. It was established on 24 January 1857 and is the oldest multidisciplinary and European-style institution in Asia. Today, the university's jurisdiction is limited to a few districts of West Bengal, but at the time of establishment it had a catchment area, ranging from Lahore to Myanmar. Within India, it is recognized as a "Five-Star University" and accredited an "A+" grade by the National Assessment and Accreditation Council (NAAC). The University of Calcutta was awarded the status of "Centre with Potential for Excellence in Particular Area" and "University with potential for excellence" by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rajabazar Science College
The University College of Science, Technology and Agriculture (commonly or formerly known as Rashbehari Siksha Prangan & Taraknath Palit Siksha Prangan or Rajabazar Science College & Ballygunge Science College) are two of five main campuses of the University of Calcutta (CU). The college served as the cradle of Indian Sciences by winning the Nobel Prize in Physics in 1930 and many fellowships of the Royal Society London. History Despite the fact that the Presidency College at Calcutta witnessed great scientific research by Jagadish Chandra Bose and Prafulla Chandra Ray in the last decade of the 19th and the first decade of the 20th century, first organised scientific research at Calcutta University began with the establishment of its University College of Science and Technology in March 1914. A galaxy of Indian scientists joined the Chairs set up with the income of the endowments of nearly thirty seven and half lakhs rupees donated by Sir Taraknath Palit and Sir Rash ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Patna University
Patna University is a public state university in Patna, Bihar, India. It was established on 1 October 1917 during the British Raj. It is the first university in Bihar and the seventh oldest university in the Indian subcontinent in the modern era. It offers different undergraduate and postgraduate degree level courses. History Patna University was established by an Act of the Imperial Legislative Council passed in September 1917. It started the journey in October 1917 as an affiliating and examining body when JG Jennings took charge of this university as the first vice-chancellor. In the modern era of India, it is one of the oldest universities in this region. Later in 1919, the governing bodies of the university—the Senate and the Syndicate—were formed. The iconic Wheeler Senate House of the Patna University was built in 1926 for which Raja Devaki Nandan Prasad of Munger donated the money. When the university was first established it had jurisdiction over all higher educat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Analog Computer Developed At Radio Physics Dept By Dr Arun Kumar Choudhury
Analog or analogue may refer to: Computing and electronics * Analog signal, in which information is encoded in a continuous variable ** Analog device, an apparatus that operates on analog signals *** Analog electronics, circuits which use analog signals **** Analog computer, a computer that uses analog signals ** Analog recording, information recorded using an analog signal * Functional analog (electronic), a system that fulfills the same function as another * Structural analog (electronic), a system that has the same structure as another Entertainment Albums and songs * ''Analog'' (album), an album by Eureka Farm * "Analog" (song), a song by Tyler, The Creator, featuring Hodgy Beats, from ''Goblin'' * ''Analogue'' (album), a 2005 album by A-ha ** "Analogue" (All I Want), the title track of the 2005 album by A-ha Books and magazines * ''Analog Science Fiction and Fact'', a science-fiction magazine * ''ANALOG Computing'', a 1981–1989 magazine about Atari computers * '' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Switching Circuit Theory
Switching circuit theory is the mathematical study of the properties of networks of idealized switches. Such networks may be strictly combinational logic, in which their output state is only a function of the present state of their inputs; or may also contain sequential elements, where the present state depends on the present state and past states; in that sense, sequential circuits are said to include "memory" of past states. An important class of sequential circuits are state machines. Switching circuit theory is applicable to the design of telephone systems, computers, and similar systems. Switching circuit theory provided the mathematical foundations and tools for digital system design in almost all areas of modern technology. In an 1886 letter, Charles Sanders Peirce described how logical operations could be carried out by electrical switching circuits. During 1880–1881 he showed that NOR gates alone (or alternatively NAND gates alone) can be used to reproduce the funct ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
High Threshold Logic
High-threshold logic (HTL), also known as ''low-speed logic'' (''LSL'') or ''high-level logic'' (''HLL''), is a variant of diode–transistor logic used in environments where noise is very high. Operation The threshold values at the input to a logic gate determine whether a particular input is interpreted as a logic 0 or a logic 1 (e.g. anything less than 1 V is a logic 0, and anything above 3 V is a logic 1; in this example, the threshold values are 1 V and 3 V). HTL incorporates Zener diodes to create a large offset between logic 1 and logic 0 voltage levels. These devices usually ran off a 15 V power supply and were found in industrial control, where the high differential was intended to minimize the effect of noise. Advantages * Increased noise margin * High noise threshold value Disadvantage *Slow speed due to increased supply voltage resulting in use of high value resistors. *High power drawn Usage It is used ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Montana State University
Montana State University (MSU) is a public land-grant research university in Bozeman, Montana. It is the state's largest university. MSU offers baccalaureate degrees in 60 fields, master's degrees in 68 fields, and doctoral degrees in 35 fields through its nine colleges. More than 16,700 students attended MSU in fall 2019, taught by 796 full-time and 547 part-time faculty. MSU is classified among "R1: Doctoral Universities – Very high research activity" and had research expenditures of $129.6 million in 2017. Located on the south side of Bozeman, the university's campus is the largest in the state. The university's main campus in Bozeman is home to KUSM television, KGLT radio, and the Museum of the Rockies. MSU provides outreach services to citizens and communities statewide through its agricultural experiment station and 60 county and reservation extension offices. The elevation of the campus is above sea level. History Establishment of the college Montana became a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1923 Births
Nineteen or 19 may refer to: * 19 (number), the natural number following 18 and preceding 20 * one of the years 19 BC, AD 19, 1919, 2019 Films * ''19'' (film), a 2001 Japanese film * ''Nineteen'' (film), a 1987 science fiction film Music * 19 (band), a Japanese pop music duo Albums * ''19'' (Adele album), 2008 * ''19'', a 2003 album by Alsou * ''19'', a 2006 album by Evan Yo * ''19'', a 2018 album by MHD * ''19'', one half of the double album '' 63/19'' by Kool A.D. * '' Number Nineteen'', a 1971 album by American jazz pianist Mal Waldron * ''XIX'' (EP), a 2019 EP by 1the9 Songs * "19" (song), a 1985 song by British musician Paul Hardcastle. * "Nineteen", a song by Bad4Good from the 1992 album ''Refugee'' * "Nineteen", a song by Karma to Burn from the 2001 album ''Almost Heathen''. * "Nineteen" (song), a 2007 song by American singer Billy Ray Cyrus. * "Nineteen", a song by Tegan and Sara from the 2007 album '' The Con''. * "XIX" (song), a 2014 song by Slip ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1987 Deaths
File:1987 Events Collage.png, From top left, clockwise: The MS Herald of Free Enterprise capsizes after leaving the Port of Zeebrugge in Belgium, killing 193; Northwest Airlines Flight 255 crashes after takeoff from Detroit Metropolitan Airport, killing everyone except a little girl; The King's Cross fire kills 31 people after a fire under an escalator flashes-over; The MV Doña Paz sinks after colliding with an oil tanker, drowning almost 4,400 passengers and crew; Typhoon Nina strikes the Philippines; LOT Polish Airlines Flight 5055 crashes outside of Warsaw, taking the lives of all aboard; The USS Stark is struck by Iraqi Exocet missiles in the Persian Gulf; U.S. President Ronald Reagan gives a famous speech, demanding that Soviet leader Mikhail Gorbachev tears down the Berlin Wall., 300x300px, thumb rect 0 0 200 200 Zeebrugge disaster rect 200 0 400 200 Northwest Airlines Flight 255 rect 400 0 600 200 King's Cross fire rect 0 200 300 400 Tear down this wal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Academic Staff Of The University Of Calcutta
An academy (Attic Greek: Ἀκαδήμεια; Koine Greek Ἀκαδημία) is an institution of secondary or tertiary higher learning (and generally also research or honorary membership). The name traces back to Plato's school of philosophy, founded approximately 385 BC at Akademia, a sanctuary of Athena, the goddess of wisdom and skill, north of Athens, Greece. Etymology The word comes from the ''Academy'' in ancient Greece, which derives from the Athenian hero, ''Akademos''. Outside the city walls of Athens, the gymnasium was made famous by Plato as a center of learning. The sacred space, dedicated to the goddess of wisdom, Athena, had formerly been an olive grove, hence the expression "the groves of Academe". In these gardens, the philosopher Plato conversed with followers. Plato developed his sessions into a method of teaching philosophy and in 387 BC, established what is known today as the Old Academy. By extension, ''academia'' has come to mean the accumulation, d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of Calcutta Alumni
A university () is an institution of higher (or tertiary) education and research which awards academic degrees in several academic disciplines. Universities typically offer both undergraduate and postgraduate programs. In the United States, the designation is reserved for colleges that have a graduate school. The word ''university'' is derived from the Latin ''universitas magistrorum et scholarium'', which roughly means "community of teachers and scholars". The first universities were created in Europe by Catholic Church monks. The University of Bologna (''Università di Bologna''), founded in 1088, is the first university in the sense of: *Being a high degree-awarding institute. *Having independence from the ecclesiastic schools, although conducted by both clergy and non-clergy. *Using the word ''universitas'' (which was coined at its foundation). *Issuing secular and non-secular degrees: grammar, rhetoric, logic, theology, canon law, notarial law.Hunt Janin: "The university in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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